The overall size of energy efficiency market is estimated to be Rs. 74,000 crores. Till now, only 5% of this market has been tapped through ESCO mode mainly in the areas of lighting and some industrial applications and the large-scale implementation of energy efficiency is constrained by a number of important regulatory, institutional and financing barriers. The concept of performance contracting implemented by Energy Service Companies (ESCOs) is being increasingly considered as a mechanism to overcome some of the barriers hindering and discouraging the large-scale implementation of energy efficiency projects. However, despite the fact that the potential for application of performance contracting in both the public and private sectors in developing nations is enormous, the growth of the ESCO industry has been particularly slow in the country. In order to develop a viable ESCO industry, Ministry of Power has set up Energy Efficiency Services Limited (EESL), a Joint Venture of NTPC Limited, PFC, REC and POWERGRID to facilitate implementation of energy efficiency projects. EESL will work as ESCO, as Consultancy Organization for CDM, Energy Efficiency, etc.; as a Resource Centre for capacity building of SDAs, Utilities, financial institutions, etc. EESL will also lead the market-related actions of the NMEEE. It is registered under the companies Act, 1956 on 10th December 2009 and the commencement of business certificate is obtained on 11th February 2010. It will be the first such company exclusively for implementation of energy efficiency in South Asia and amongst a very few such instances in the world.